Essays about: "gradient boost"

Showing result 6 - 10 of 12 essays containing the words gradient boost.

  1. 6. Flight Sorting Algorithm Based on Users’ Behaviour

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Qingyan Ben; [2021]
    Keywords : Ranking systems; recommendation systems; machine learning; deep learning; data balance; Rankningssystem; rekommendationssystem; maskininlärning; djupinlärning; databalans;

    Abstract : The model predicts the best flight order and recommend best flight to users. The thesis could be divided into the following three parts: Feature choosing, data-preprocessing, and various algorithms experiment. READ MORE

  3. 7. Abnormality detection in diagnostics data from network cameras

    University essay from Lunds universitet/Matematik LTH

    Author : André Hedesand; Oliver Dageson; [2021]
    Keywords : machine learning; change detection; anomaly detection; data synthesis; forecasting; gradient boost; Mathematics and Statistics;

    Abstract : For data-driven companies, there is a need to efficiently navigate through big quantities of collected data. In our case; detecting changes in the behaviour of data. We have investigated whether machine learning could be applied to automate the process of finding abnormal behaviour (anomalies) in collected data. READ MORE

  4. 8. Machine Learning in Electricity Load Forecasting of Prosumer Buildings

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Lu Zhao; [2021]
    Keywords : ;

    Abstract : Short-term load forecasting plays a key role in energy optimizations such as peaking shaving and cost arbitrage. Forecasting the aggregated load of a city or region has been researched for years and produced accurate results with time lead ranging from an hour to a week. READ MORE

  5. 9. Knock model evaluation - Gas engine

    University essay from KTH/Förbränningsmotorteknik

    Author : Nishchay Sharma; [2018]
    Keywords : Knocking; Spark-Ignited; Internal Combustion Engine; Spark-Knock; Empirical Correlation Models; BOOST; Combustion Phasing; Spark-advance; Combustion Duration; Knock Prediction Parameter.; Knack; Otto-förbränning; Förbränningsmotor; Empiriska korrelationsmodeller; BOOST; Förbränningsfasning; Tändvinkel; Förbränningsduration; Knackprediktering;

    Abstract : Knack i en förbränningsmotor är en typ av onormal förbränning. Det är ett komplicerat fenomen som beror på flera fysiska faktorer och resulterar i högfrekventa tryckoscillationer inuti förbränningskammaren. Dessa oscillationer kan skada motorn och fenomenet hämmar motorns effektivitet. READ MORE

  6. 10. Knock Model Evaluation – Gas Engine

    University essay from KTH/Maskinkonstruktion (Avd.)

    Author : Nishchay Sharma; [2018]
    Keywords : Knocking; Spark-Ignited; Internal Combustion Engine; Spark-Knock; Empirical Correlation Models; BOOST; Combustion Phasing; Spark-advance; Combustion Duration; Knock Prediction Parameter.; Knack; Otto-förbränning; Förbränningsmotor; Empiriska korrelationsmodeller; BOOST; Förbränningsfasning; Tändvinkel; Förbränningsduration; Knackprediktering.;

    Abstract : Knocking is a type of abnormal combustion which depends on several physical factors and results in high frequency pressure oscillations inside the combustion chamber of a spark-ignited internal combustion engine (ICE). These oscillations can damage the engine and hamper its efficiency, which is why it is important for automakers to understand the knocking behavior so that it can be avoided during engine operation. READ MORE